TY  - BOOK
AU  - Webb, John W.
AU  - Reis, Ronald A.
TI  - Programmable logic controllers : principles and applications
SN  - 9788120323087
U1  - 004.16 
PY  - 2013///
CY  - Delhi
PB  - PHI Learning Private Limited
KW  - EE
N1  - Includes bibliographical references and index; SBA, New Delhi
ER  -